import java.awt.Color;
import java.lang.reflect.Field;
 
public class Main {
 
    public static String getColorName(Color c) {
        for (Field f : Color.class.getFields()) {
            try {
                if (f.getType() == Color.class && f.get(null).equals(c)) {
                    return f.getName();
                }
            } catch (java.lang.IllegalAccessException e) {
                // it should never get to here
            } 
        }
        return "unknown";
    }
 
    public static void main(String[] args) {
 
        System.out.println(getColorName(Color.BLACK));
        System.out.println(getColorName(Color.BLUE));
        System.out.println(getColorName(new Color(1,2,3)));
 
    }
 
}

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